Title: E_ERROR Last modified: March 20, 2022 --- # E_ERROR * Resolved [vawp](https://wordpress.org/support/users/vawp/) * (@vawp) * [4 years, 2 months ago](https://wordpress.org/support/topic/e_error-18/) * Since a very long time I get this from time to time… it has not changed with several updates of wordpress and popup maker. * Howdy! * Since WordPress 5.2 there is a built-in feature that detects when a plugin or theme causes a fatal error on your site, and notifies you with this automated email. * In this case, WordPress caught an error with one of your plugins, Popup Maker. * First, visit your website ([https://domain.com/](https://domain.com/)) and check for any visible issues. Next, visit the page where the error was caught ([https://domain.com/wp-login.php](https://domain.com/wp-login.php)) and check for any visible issues. * Please contact your host for assistance with investigating this issue further. * If your site appears broken and you can’t access your dashboard normally, WordPress now has a special “recovery mode”. This lets you safely login to your dashboard and investigate further. * [https://domain.com/7474/?action=enter_recovery_mode&rm_token=HGLmKZ0vpVmyN5Z1sg4e18&_key=a4QjYQ6r72i4GL5CgDVO1g](https://domain.com/7474/?action=enter_recovery_mode&rm_token=HGLmKZ0vpVmyN5Z1sg4e18&_key=a4QjYQ6r72i4GL5CgDVO1g) * To keep your site safe, this link will expire in 1 day. Don’t worry about that, though: a new link will be emailed to you if the error occurs again after it expires. * When seeking help with this issue, you may be asked for some of the following information: WordPress version 5.9.2 Current theme: (version ) Current plugin: Popup Maker (version 1.16.4) PHP version 8.0.16 * Error Details ============= An error of type E_ERROR was caused in line 173 of the file /home/www/domain.com/wordpress/wp-content/plugins/popup-maker/classes/ Site/Popups.php. Error message: Uncaught Error: Attempt to modify property “posts” on null in /home/www/live_domain.com/wordpress/wp-content/plugins/popup-maker/ classes/Site/Popups.php:173 Stack trace: #0 /home/www/live_domain.com/wordpress/ wp-content/plugins/popup-maker/classes/Site/Popups.php(109): PUM_Site_Popups:: preload_popup(Object(PUM_Model_Popup)) #1 /home/www/live_domain.com/wordpress/ wp-includes/class-wp-hook.php(307): PUM_Site_Popups::load_popups(”) #2 /home/ www/live_domain.com/wordpress/wp-includes/class-wp-hook.php(331): WP_Hook->apply_filters( NULL, Array) #3 /home/www/live_domain.com/wordpress/wp-includes/plugin.php(474): WP_Hook->do_action(Array) #4 /home/www/live_domain.com/wordpress/wp-includes/ script-loader.php(2105): do_action(‘wp_enqueue_scri…’) #5 /home/www/live_domain. com/wordpress/wp-includes/class-wp-hook.php(307): wp_enqueue_scripts(”) #6 /home/ www/live_domain.com/wordpress/wp-includes/class-wp-hook.php(331): WP_Hook->apply_filters( NULL, Array) #7 /home/www/live_domain.com/wordpress/wp-includes/plugin.php(474): WP_Hook->do_action(Array) #8 /home/www/l/wordpress/wp-includes/general-template. php(3042): do_action(‘wp_head’) #9 /home/www/live_domain.com/wordpress/wp-content/ themes/Sven/header.php(18): wp_head() #10 /home/www/live_domain.com/wordpress/ wp-includes/template.php(770): require_once(‘/home/www/live_…’) #11 /home/www/ live_domain.com/wordpress/wp-includes/template.php(716): load_template(‘/home/ www/live…’, true, Array) #12 /home/www/live_domain.com/wordpress/wp-includes/ general-template.php(48): locate_template(Array, true, true, Array) #13 /home/ www/live_domain.com/wordpress/wp-content/themes/Sven/404.php(8): get_header()# 14 /home/www/live_domain.com/wordpress/wp-content/plugins/wp-cerber/cerber-load. php(4642): include(‘/home/www/live_…’) #15 /home/www/live_domain.com/wordpress/ wp-content/plugins/wp-cerber/cerber-load.php(2456): cerber_404_page() #16 /home/ www/live_domain.com/wordpress/wp-content/plugins/wp-cerber/cerber-load.php(2423): cerber_access_control() #17 /home/www/live_domain.com/wordpress/wp-includes/class- wp-hook.php(307): {closure}(”) #18 /home/www/live_domain.com/wordpress/wp-includes/ class-wp-hook.php(331): WP_Hook->apply_filters(NULL, Array) #19 /home/www/live_domain. com/wordpress/wp-includes/plugin.php(474): WP_Hook->do_action(Array) #20 /home/ www/live_domain.com/wordpress/wp-settings.php(587): do_action(‘init’) #21 /home/ www/live_domain.com/wp-config.php(93): require_once(‘/home/www/live_…’) #22 / home/www/live_domain.com/wordpress/wp-load.php(55): require_once(‘/home/www/live_…’)# 23 /home/www/live_domain.com/wordpress/wp-login.php(12): require(‘/home/www/live_…’)# 24 {main} thrown Viewing 2 replies - 1 through 2 (of 2 total) * [Bel](https://wordpress.org/support/users/belimperial/) * (@belimperial) * [4 years, 2 months ago](https://wordpress.org/support/topic/e_error-18/#post-15481695) * Hi [@vawp](https://wordpress.org/support/users/vawp/) * Thank you for reaching out, and we’re sorry an error is occurring when using Popup Maker. * We’ll ask our development team to have a look and get back to you. * Thank you for your patience. * We also suggest running through the plugin/theme conflict troubleshooting steps to isolate the issue. Here’s the link for a full guide: * [Test if a Plugin or Theme Interferes with Popup Maker](https://docs.wppopupmaker.com/article/332-test-whether-a-plugin-or-theme-interferes-with-popup-maker) * We hope that helps. Please let us know how that goes. * Thank you! * [Bel](https://wordpress.org/support/users/belimperial/) * (@belimperial) * [4 years, 2 months ago](https://wordpress.org/support/topic/e_error-18/#post-15504488) * Hi [@vawp](https://wordpress.org/support/users/vawp/) * I hope you are doing well. I want to make a follow-up about the result of the troubleshooting steps? * Our developer mentioned that you may need to run through the plugin/theme conflict troubleshooting steps, as the errors can be because of a conflict. * Thank you, and we look forward to your response. Viewing 2 replies - 1 through 2 (of 2 total) The topic ‘E_ERROR’ is closed to new replies. * ![](https://ps.w.org/popup-maker/assets/icon-256x256.gif?rev=3097653) * [Popup Maker - Boost Sales, Conversions, Optins, Subscribers with the Ultimate WP Popup Builder](https://wordpress.org/plugins/popup-maker/) * [Frequently Asked Questions](https://wordpress.org/plugins/popup-maker/#faq) * [Support Threads](https://wordpress.org/support/plugin/popup-maker/) * [Active Topics](https://wordpress.org/support/plugin/popup-maker/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/popup-maker/unresolved/) * [Reviews](https://wordpress.org/support/plugin/popup-maker/reviews/) * 2 replies * 2 participants * Last reply from: [Bel](https://wordpress.org/support/users/belimperial/) * Last activity: [4 years, 2 months ago](https://wordpress.org/support/topic/e_error-18/#post-15504488) * Status: resolved